Giveway for weft-replenishing looms



Dec. 28, 1926. 1,612,097

- A. J. CHEVRETTE GIVEWAY FOR WEFT REPLENISHING LOOMS Filed July 50,1925 (Emma;

INVENTOIB.

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AUGUSTIN J. CHEVBETTE, OF WORCESTER, ll'IAElElAOl-EUSEIEIS, ASE-IGNOB Toaoiar'ron & KNOWLES LOOM VIORKS, OF 'WQRCESTEB. ll'IAS-SAGHUSETTQa, ACORPORATION (3F MASSACHUSETTS.

GIVEXVAY FOB \HEFT-REP'LENESHZTNG LOQIVIS.

Application filed July so, 1925. Serial No. 47,145.

This invention relates to improvements in bobbin supports for weftreplenishing mechanisms of the multi-color type and an object of theinvention is to provide a support with a giveway the end of which may.yield in any angular direction with respect to the supportingstructure.

In replenishing mechanisms of the type referred to bobbins are releasedfrom one of several vertical compartments and guided along supports totransfer positionjust prior .to the descent of the transferrer arm. Itsometimes happens that the bobbin moves towardtransfer positionirregularly and is struck by the arm before being properly placed. -Whenthis occurs it is desirable that the support yield to prevent breakageand :it is accordingly a further object of my in- ,vention to provideasupport so constructed that it will yield downwardly under the pressureof an improperly placed bobbin. It also occasionally happens that abobbin will beimproperly transferred into a shuttle and as it is carried.rearwardly by the lay willproject to engage the giveway, and to preventbreakage under such conditions the support is so made as to yieldupwardly or iaterally when engaged by a misplaced bob A still ;furtherobject of my invention is ,to provide bobbin supporting unit symmetricalabout the longitudinal aXis thereof and having a supporting tubularsection, a second tubular section yieldable relatively thereto, and ayieldable nose mounted on the second section, the nose yielding moreeasily than the second .section.

Vllith these and other objects in view which will appear asthe'description proceeds, my invention resides inthe combination andarrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenientembodiment of my invention,

Fig. '1 is a vertical section through a multi-color weft replenishingmechanism looking toward the center of the loom and having my inventionapplied thereto,

Fig. 2 is an enlarged vertical section through the improved giveway,

Fig. 3 is an end elevation looking in the direction of arrow 3, Fig. 2,

Figs. 4and 5 aretransverse sections taken ed on a fixed tie rod 15.

on lines 4-4 and 55, respectively, of Fig. 2, and

Fig. 6 is an enlarged detail of the joint between the main body of thesupport and the yieldable tubular section on wh ch the nose is mounted.

Referring more particularly to the. drawings it wi l be seen that I haveprovided a weft replenishing frame 10 having plurality of guideways 11in which bobbins normally await transfer. The bobbins are delivered oneat a time by devices not shown to move to transfer position underthetransferrer arm 12. A guideway 13 is pivotally mounted at the bottomof a link 14 shown in dotted lines in Fig. 1 and loosely mount- Theguideway 13 has a rearwardly and upwardly extending arm 16 which haspivotal connection as at 17 with a link 18 pivoted at 19 to some fixedpart of the replenishing mechanism. A spring 20 serves to holdtheguideway 13 in the position shown in Fig. 1. The matter thus fardescribed is of common construction and for further descriptionreference may be had to Patent No. 1,030,748 and Patent No. 1,366,950.

My invention relates more particularly to an improvement in a yieldingsupport to lie under the yarn at the small end of the bobbin. As shownin Fig. 1 I provide a holder which is secured to the tie rod 15 by meansof set screw 31 said holder being split as at 32 to provide a clampwhich may be tightened by screws 33. The support is formed of a tubularbody 34 which is held in adjusted longitudinal position in support 39 bymeans of screws 33. A yielding second tubular section 35 substantiallythe same diameter as the body 34 is provided with a tapered connectionwith the body 34 as shown in Figs. 2 and 6. The tubular sections areheld in substantial alignment by means of a coil spring 36 which fitssnugly inside the sections, the rear end of the spring being bent asshown at 37 behind a shoulder 38 formed on the body 34. Similarly,section 35 is provided with a shoulder 39 which holds the projectingend40 of the spring 36. In this way 7 the coil spring is held-in placeunder tension to keepthe sections aligned and permit yielding of thesection 35.

The outer end of the bobbin, when in lOO permit easy movement of thebobbin there- 7 across and the rear end of which is provide-d with aneye 12 to receive the forward end of a light spring l3. The rear end ofsaid spring 43 is received by a .crew 1% adjustably threaded in a blockd5 arried by the end of the body S t and locked in position by nuts 46.Said member ll is provided with a shoulder a? which abuts the forwardend of the section 35. The spring d3 lies inside the larger spring 36without touching the same and yields more easily than spring 36.

Under normal transferringconditions the member 41 will be depressedabout the lower portion of the shoulder 47 to assume the dotted lineposition 6t) shown in Fig. 2. Should the member -l-l be e; gaged by animproperly transferred bobbin as the latter moves rearwardly with thelay said member will be raised to the dotted line position shown in Fig.2. On the other hand if the bobbin is slow in descending to transferposition and is engaged by the transferrer arm 12 while still in contactwith section 35, said section and member d1 will be moved to the dottedline position shown in Fig. 2 and prevent breakage. it will beunderstood that the nose tl engages the cylindrical portion of the yarnnear the tip end of the bobbin, as set forth in Patent No. 1.518592.

The support may be moved as a unit to ward and from the bobbin byloosening the screws 33 and the angular adjustment may be secured bymeans of screw 31. By means of these two adjustments the position of thenose 41 may be varied as desired.

From the foregoii'ig it will be seen that l have provided a jointedbobbin supporting unit for use in weft replenishing mechanismssyn'nnetrical about the longitudinal axis thereof and having twoyielding sections one of which yields more easily than the other andthat said unit is mounted on a support which is angularly adjustable sothat the nose 41 may be moved to any desired position.

Having thus described my invent-ioi'i it will be apparent that changesand modifications may be made therein by those skilled in the artwithout departing from the spirit and scopeof the invention, and I donot wish to be limited to the details herein disclosed,

but what I claim is:

1. In a weft replenishing mechanism for looms, a holder supported by thereplenishing mechanism, and a bobbin support held by the holder andhaving two aligned yielding portions both positioned for engagement withthe bobbin, one portion being yieldable more readily than the otherportion.

2. In a weft replenishing mechanism for looms, a holder supported by andadjustable having independent aligned sections relatively movable withrespect to each other, each section being angularly movable in alldirections and said sections being yieldablo under different degrees ofpressure.

4. In a weft replenishing mechanism for looms, a bobbin support mountedon the replenishing mechanism and having a plu' ralit-y of sectionsyieldable under ditt'erent degrees of pressure and each movable in anyangular direction with respect to the axis of the support.

5. A bobbin support for loom weft replenishing mechanism having a bobbinengaging portion movable in any angular direction with respect to theaxis of the support and having a holding portion, the cross section ofwhich is regular, whereby said bobbin support may assume a number ofangular positions relatively to the bobbin, the axes of the two portionsof the support being normally in substantial alignment.

6. A bobbin support for loom weft replenishing mechanism formedsymmetrically about the axis thereof, and having a yielding bobbinengaging end portion the axis of which is parallel to the axis of thesupport, said end portion being movable in any angular direction withrespect to the axis of the support.

7. A bobbin support for loom weft replenishing mechanism having a pairof aligned yielding bobbin engaging sections each of which is movable inany angular direction with respect to the axis of the support.

8. A bobbin. support for loom we ft replenishing mechanism havingaligned yieldable bobbin engaging portions each of which is movable inany angular direction with respect to the axis of the support and one ofsaid sections yielding more readily than the StCLlOIl adjacent thereto.

5 A bobbin support for loom we replenishing mechanism compriring ahoilow body portion, a hollow section resiliently held to the bodyportion, and a bobbin engaging end portion supported resiliently withrespectto the support and hollow section by a spring passing throughsaid body portion and hollow section.

10. A bobbin support for loom weft replenishing mechanism comprising apair of tubular members movable with respect to once other, a coilspring located within said members and holding the same together iii LiJ) yieldably, and a bobbin engaging nose porlion mounted yieldingly withrespect to both of said members.

11. A bobbin support for loom weft replenishing mechanism comprising ahollow body portion, a bobbin engaging end portion movable in anyangular direction with respect to the axis of the body portion, and aspring located in the hollow body portion and holding the end portion inyielding relationship with respect to the body portion.

12. A. bobbin support for loom weft replenishing mechanism com 'irisinga pair of tubular members, a coil spring located within said members andholding the same in alignment, a bobbin engaging end portion mounted for.movement in any angular direction with respect to one of said tubularsections. and a second weaker spring located within the first namedspring to hold the bobbin engaging portion yieldingly in positron.

13. In a weft replenishing mechanism for looms, a holder adjustable withrespect to the mechanism, and a bobbin support mounted on the holder andextending from the holder toward a bobbin when in transfer po-- sition,said support comprising a part fixed to the holder and another partaligning with and yieldingly held to the fixed part and positioned tosupport a bobbin in transfer position and movable in all angularpositions relatively to the first named part.

1%. In a weft replenishing mechanism for a loom, a holder normally fixedwith respect to the mechanism, and a bobbin. support held to the holderand movable relatively to the holder in direction transverse to the axisof a bobbin in transfer position to assume any one of a number ofadjusted positions relatively to the holder, said support having abobbin supporting end yieldable in all angular positions with respect tothat part of the bobbin support which is held to the holder.

15. In a weft replenishing mechanism f0 looms, a relatively fixedholder, and a bobbin support mounted on the holder, said support beingmovable longitudinally relatively to the holder in a direction towardand from a bobbin in transfer position to assume any one of a number ofpositions relatively to the holder and being also movable angularly toassume any one of a number of angular positions relatively to theholder.

16. In a weft replenishing mechanism for looms, a relatively fixedholder. and a bobbin support mounted on the holder, said support beingmovable longitudinally relatively to the holder in a direction towardand from av bobbin .in transfer position to assume any one of a numberof positions relatively to the holder and being also movable angularlyto assume any one of a number of angular positions relatively to theholder, the end of the support which supports the bobbin being yieldablein all angular directions relatively to the part of the support which isheld to the holder.

17. In a weft replenishing mechanism for looms, a holder, a bobbinsupport having a holding member held in the holder, at bobbin engagingtip member angularly n'iova-ble with respect to the holding member. andresilient means connecting said members and yielding to render the tipmember capable of angular movement in any direction relatively to theholding member, the axes of said members being substantially parallel.

18. A bobbin support for a weft replenishing loom having a cylindricalholding part whereby the support may be held in a number of angularpositions and said support also having a bobbin supporting end yieldablein all directions relatively to the holding part, said parts having.their axes in substantial alignment.

19. A bobbin support for a loom Weft replenishing mechanism comprising abody portion, a bobbin engaging portion separate from the body portion,and a resilient device engaging both portions and holding them in normalposition, said resilient device yielding to permit the bobbin engagingportion to move in any angular direction relatively to the body portion.

20. In a weft replenishing mechanism for looms, a bobbin supportcomprising a pair of members one of which is held rigidly with respectto the mechanism, and a resilient de vice interposed between saidmembers and having holding contact therewith to afford a yieldingmounting for one of said members thereby rendering possible yieldingmovement in all angular directions of one member with respect to theother.

21. In a weft replenishing mechanism for looms, a bobbin supportcomprising a pair of substantially cylindrical members one of which isheld rigid with respect to the replenishing mechanism, a coil springhaving the ends thereof in holding contact with said members, the otherof said members being yieldable in all angular directions with respectto the first named member.

In testimony whereof I have hereunto affixed my signature.

AUGUSTIN J. CHEVRETTE.

